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| author | James Bottomley <JBottomley@Parallels.com> | 2011-07-23 21:09:03 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-23 21:09:03 +0400 |
| commit | 87045b033a62777337ae4aa62834876da09b5fb5 (patch) | |
| tree | 26aefd28e436668ff906e42b1e0d75c056e33e01 /Documentation/cgroups/blkio-controller.txt | |
| parent | 0d83ab65ff1b54ce8b6cd172285cf71a38c4cceb (diff) | |
| parent | bfe159a51203c15d23cb3158fffdc25ec4b4dda1 (diff) | |
Merge branch 'scsi-fixes'
Diffstat (limited to 'Documentation/cgroups/blkio-controller.txt')
| -rw-r--r-- | Documentation/cgroups/blkio-controller.txt | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt index cd45c8ea746..84f0a15fc21 100644 --- a/Documentation/cgroups/blkio-controller.txt +++ b/Documentation/cgroups/blkio-controller.txt @@ -77,7 +77,7 @@ Throttling/Upper Limit policy - Specify a bandwidth rate on particular device for root group. The format for policy is "<major>:<minor> <byes_per_second>". - echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.read_bps_device + echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.throttle.read_bps_device Above will put a limit of 1MB/second on reads happening for root group on device having major/minor number 8:16. @@ -90,7 +90,7 @@ Throttling/Upper Limit policy 1024+0 records out 4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s - Limits for writes can be put using blkio.write_bps_device file. + Limits for writes can be put using blkio.throttle.write_bps_device file. Hierarchical Cgroups ==================== @@ -286,28 +286,28 @@ Throttling/Upper limit policy files specified in bytes per second. Rules are per deivce. Following is the format. - echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.read_bps_device + echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device - blkio.throttle.write_bps_device - Specifies upper limit on WRITE rate to the device. IO rate is specified in bytes per second. Rules are per deivce. Following is the format. - echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.write_bps_device + echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device - blkio.throttle.read_iops_device - Specifies upper limit on READ rate from the device. IO rate is specified in IO per second. Rules are per deivce. Following is the format. - echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.read_iops_device + echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device - blkio.throttle.write_iops_device - Specifies upper limit on WRITE rate to the device. IO rate is specified in io per second. Rules are per deivce. Following is the format. - echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.write_iops_device + echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device Note: If both BW and IOPS rules are specified for a device, then IO is subjectd to both the constraints. |